Subwoofer Ported Boxes

If you are searching for subwoofer ported boxes that will fit
under or behind the seat of your Chevy, Ford, Dodge, Toyota and Nissan
then you may have ended up in the right spot. The link above will take
you to the Pickup Specialties web site where there is an abundance of sub
woofer enclosures. You might have been thinking that you would
have to bite the bullet and build the damn thing yourself. But
when you consider the time its going to take you to just figure out what
the dimensions are going to be and then add the time it will take you to
round up the wood, carpet (where do you get that kind of carpet anyway?)
and staples etc. etc. you almost have to be thinking "why don't I just
buy a subwoofer box that's already made for my f-150"? If you're
still think you can do it then you'll have to call in sick from work for
the 3 or 4 days its gonna take you to build it. Sub woofer boxes aren't
rocket science or anything but for what you can buy one for it just
doesn't make a lot of sense to even consider building a subwoofer
enclosure for chevy pickup trucks when they are just a click away.

The most important element if you do
build it yourself is to make it strong enough take the pressure of
today's high powered sub woofer systems. If its not built tough
enough to contain that pressure you will suffer bass quality (which is
why you want custom subwoofer enclosure in the first place) and possibly
the destruction of the box itself.

You don't want the panels
to flex because you'll loose output and clarity. Your box must be
built with 5/8" to 3/4" fiberboard (the brand name you should be looking
for is Medite) with plenty of bracing. You can get away with something
like a high quality birch of marine plyboard but stay away from particle
board. You need something that wont swell up on you if it gets wet
and a material that will take the screws.

While it is always a pretty good idea to stay away
from perfect cubes, they don't necessarily have to be avoided like The
Plague. Due to the very small dimensions of most mobile subwoofer
enclosures, there is little chance of generating standing waves in the
enclosure (standing waves cause nasty response fluctuations). For a
standing wave to exist, the distance between parallel boundaries must be
1/2 the wavelength of the frequency at which the standing wave exists.
Considering that sub-bass waves vary from 56.4 feet (20 Hz) to 11.28
feet (100 Hz), the generation of a standing wave is going to be
impossible....after all, the enclosures we're speaking of have to fit in
the average sedan or hatchback! So now you know where to go for your
subwoofer ported boxes.